The book compiled by Elena Blavatsky on the basis of the oldest Tibetan manuscripts has long and rightfully been called the pearl of human wisdom. The collection includes articles that clarify complex aspects of traditional teachings: Kabbalah, Zoroastrianism, Buddhism, alchemy. For an inquisitive and unbiased mind, these immeasurably deep works will reveal many secrets of Nature and man and will become the first stage on the path of philosophical search.